Binder



H. C. KRAUSE.

BlNDER.

APPLICATION FILED APR. 21, m.

1,370,595, Patented Mar. 8, 1921.

INVENTOR WITNESSES VATTIORNEY UNITED STATES PATENT OFFICE.

HUGO C. KRAUSE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SINGERMANUFACTURING COMPANY, A CORPORATION OF NEW' JERSEY.

BINDER.

Application filed April 27, 1918.

To all whom it may concern Be it known that I, HUGO C. Knausn, a citizenof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inBinders, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to attachments for sewing machines known asbinders.

It aims to provide a new and improved construction easily andinexpensively manufactured and eflicient in operation, being intendedespecially for handling bias material whose raw and ragged edges areturned in and concealed.

It consists essentially of separate and distinct folding portions formedin one piece out of sheet-metal and arranged in tandem with transverseslots for guiding the strip in its passage through the binder and fortensioning the strip and ironing its edge folds. A work-supporting apronis soldered to the binder which in turn is soldered to a supportingplate having a vertical edge-guiding wall adjacent and beyond thedelivery end of the binder.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a side elevation of the binder, Fig. 2 a plan view and Fig.3 a front elevation.

To a supporting plate 1 having elongated slots 2 through which clampingscrews (not shown) are adapted to pass and adjustably secure theattachment in front of a needle 3, and having also a vertical wall i, abinder, indicated generally by the numeral 5, is soldered with itsdelivery end 6 slightly in rear of the edge-guiding portion 7 of thewall The binder proper is made in one piece by suitably blanking out api ce of sheet metal and bending it to form the edge-folding portion 8and the body-folding portion 9. The edge-folding portion 8 is equippedwith folding scrolls 10 and provided with a strip-- guiding slot 11. Thebody-folding portion 9 has its edges bent into folding scrolls 13 and isalso bent intermediate its edges to fold the strip of binding intoU-shape. A pair of slots 14 are also provided in the body-foldingportion 9 and the strip of metal 15 between the slots is slightly sprungtoward the reader as he views Fig. 1.

Secured to the binder, preferably by soldering to the lower of thescroll portions Specification of Letters Patent.

Fatented Mar. 8, 1921.

Serial No. 231,059.

13, is an apron 16 for supporting the body fabric to which the bindingis to be applied. This apron is cut away as indicated at 17 so as not tointerfere with the edge of the strip and a lip 18 extending upwardlyfrom the apron is soldered to the back of the edge-folding portion 8.

. The binder is threaded up by passing the strip through the slot 11toward the reader, thence under the scroll portions 10, thence throughthe right-hand slot 1 1 away from the reader, then through the left-handslot 1 1 toward the reader and finally through the scroll portions 13.In operation, the slot 11 guides a strip centrally to the edge-foldingportion 8 where its edges are folded and in passing through the slots 14the folded edges are not only maintained folded but are ironed flat andnecessarily at the same time tension is applied to the binding. From theslots 14. the strip passes into the body-folding portion 9 where it isfolded intermediate its edges into U-shape as is well understood bythose skilled in the art. After the binding leaves the binder it isdirected to the needle by the edgeguiding wall 7.

Owing to the slight curvature of the binder between its receiving anddelivery ends and consequent relative angular disposition of theedge-folding and body-folding portions 8 and 9, and also owing to thedisposition of the tensioning and ironing slots 14, the device of thepresent invention folds and conceals the raw edges of a bias stripwithout the use of such auxiliaries as a banding wheel or a tensionspring which have heretofore been employed. Thus an old result isaccomplished in as good, if not better, way than heretofore with a muchsimpler construction whose operation once satisfactorily attained iscertain to be reliably maintained.

Having thus set forth the nature of the invention, what I claim hereinis 1. A onepiece single walled binder for bias material having aplurality of separate and distinct folding portions arranged in tandemand spaced apart and adapted to act successively on a strip to firstfold its edges and then to fold it intermediate its edges into U-shape,a guiding and tensioning means for the strip between the separatefolding portions, and means for attaching the binder to a sewingmachine.

2. A binder for bias material having a plurality of separate anddistinct folding portions arranged in tandem and adapted to actsuccessively on a strip to fold it into U- shape with its raw edgesturned and also having means acting on the strip between the foldingportions for ironing the edge folds of and applying tension to thestrip, and means for attaching the binder to a sewing machine.

3. A one-piece single walled binder for bias material having a pluralityof separate and distinct folding portions arranged in tandem and spacedapart and adapted to act successively on a strip to fold it into U-shapewith its raw edges turned and also having means for guiding the foldedstrip in its passage between the folding portions of the binder, andmeans for attaching the binder to a sewing machine.

4. A one-piece single walled binder for bias material having a pluralityof separate and distinct folding portions arranged in tandem and adaptedto act successively on a strip to first fold its edges and then to foldit intermediate its edges to U-shape, an edge guide integral with thebinder and located beyond its delivery end, and means for attaching thebinder to a sewing machine.

5. A binder having a plurality of separate and distinct folding portionsarranged in tandem and adapted to act successively on a strip to firstfold the edges and then fold the strip into U-shapc, means for ironingthe strip in its passage between the folding portions of the binder, andmeans for attaching the binder to a sewing machine.

6. A one-piece single walled sheet-metal binder having separate anddistinct edge and body folding portions arranged in tandem and providedwith a plurality of slots, some between the folding portions and atleast .one in advance .of the edge-folding portion for guiding the stripto the same, and means for attaching the binder to a sewing machine. V

In testimony whereof I have signed my name to this specification.

HUGO O. KRAUSE.

